Piston-rod.



vJ. R. FRENCH.

PISTON ROD. APPLICATION Flu-i0 FEB. 24. I916.

l/ENTOR 454F151 Patented Mar. 6, 1917.

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arrant Specification of Letters Patent.

Leisure Application tiled February 24, 191 3.

To all 107mm may concern:

Be it knownthst 1, JAMES R. FRENCH, a citizen of the United States, residing at the town of Lomux, county of Henderson, and State of Illinois, have invented certain new and useful Improvements in Pistoullocls, of which the -following is u specification.

This invention relates to piston rools, more particularly to such as are used in connection with internal combustion motors, to connect the piston with the crank shaft.

An object of this invention is to provide an improved construction wherein provision is made for compensating for any wear in the bearings, whether of the bushings our ried by the rod, or of the pin to which it is attachetl. lVith the foregoing and other objects in view, the invention consists of the novel coir struetion and arrangement of perts illustratecl in the accompanying drawing, which forms a part of this specification, wherein is set forth an embodiment of the invention, but it is to be understood that such changes and modifications may be resorted to as come within the scope of the appended claims. Referring now to the drawing wherein similar reference characters cesignete like parts in the several views: Figure 1, is o sicle elevation of an embodiment of tle invention, with ports broken away to "show the con struction: Fig. 52, front elevation: l 3, a central vertical SQCti0l1,'9I1 Z1E1 enlarged scale, on line 8 3 oi Fig. 1: Fig. 4, a "trans verse section on line of Fig. 1: Fig.

a perspective view of the lower end of the rod with the strap removecl: Fig e, a perspective view of the strap which fits over the lower end of the rod. Referring now .inore particularly to the drawing the reference character 10- tlesignetes a rod, the stem, or body -11 of which may be of any desired shape. it the lower end of the stern is an enlargement -12- which projects beyond, the sides of the rod, forming shoulders l3-. The opposite laces -1 l-, of the enlargement are plune'surfaoes which lie in substantieliy the some planes as the edges of the rod. Dis posecl across the lower end of the rod is a bearing -l5- which is adapted to receive the upper half -16- may be of usual or any suitable pattern. A strap 17- which fits over the lower end of the rod carries the lower half l8- o;t the posed between the wings and strap and the rod, the largest, or butt and of of a bushing which Patented litter, o, 1191. No. sense.

bushing. The sides -19- of the strap parallel, but the sides respectively, of the'beoring l5 and the enlergeinent 12. A pair of tapering, or wedge shapeclsshinis 21, 22 are intersicles of the the outer shin 21 rests upon ledges, or shoulder -E23- on the strap. The outer sides or the wings20, are arcs of a circle, the radius of which is a little greater than that of the edges of the enlargement 19' on the rod, and are .proviiiecl with screw threads -24. A sleeve -25-- pr ovicled with internal screw threads 26- is disposed about the body 11, anal engages with the threads 2% on the strap. An intersoul shoulder -27- on the sleeve bears on the shoulders 13, of the enlargement 12, on the rod. It is obvious that with 'the'sleeve resting c n the shoulder 27, and engaged with the threeels on the strap, the strap can be adiustecl to and fro relutiveto the rod by turning sleeve. The butt end of the inner shun beers eguinst the shoulder 27 of the sleeve. 1 The oliiee of the shim is to prevent any lateral movement of the strap relative to the rod Ciue to wear. A pring -2 coiled about the rod is adapted to have its free end -2 engaged in recesses -30- in the upper edge of the sleeve ancl'tencls to ert constant tension thereon to prevent retrogriule movement of the sleeve.

In. service any wear of the bushings, or the crank pin, may be taken up by turning the sleeve to draw the straps up. The use of a strap to hold bushings in contact with a bearing pin is well known, but the arrange ment forth herein for drawing the strap up and taking up uny wear of bushings or crenlr pin is new.

' Having thus described that anyone skilled in tl thereto may make and use my invention so 1e art pertaining the same,

I cleirn2- I 1. A piston rod comprising a stem, a strap having screw-threedecl wings embracing an end thereof, it screw threaded sleeve disposed about said stern and engaged; with the screw threads on the strap, said sleeve being provided with a plurality of radial slots, anti e resilient element and adapted to he said slots. r

2. A piston rod, comprising "a stem,'0r

engaged in any one of inner side of the and wings 26 are spaced from connected with the stem body, a st 211) embracing an end thereof, a sleeve disposed about said stem and engaged with said strap to draw the same up against the end of the rod, said sleeve being provided with a plurality of openings at the upper end thereof, and a resilient element connected with the stem and adapted to be engaged in any one of said openings.

3. A piston rod, comprising a stem, or body, a strap embracing an end thereof, a sleeve disposed about said stem and engaged with said strap to draw the same up against the end of the rod, said sleeve being provided with a plurality of openings at the upper end thereof, and a coil spring disposed about the stem and adapted to be engaged in any one of said openings.

4. A piston rod comprising a stem, or body, a strap having wings embracing an end thereof, a sleeve disposed about said stem and the wings of said strap, and engaged with the strap to draw the same against the end of the stem, and means adjustably engageable with the sleeve to exert forward pressure thereon.

A piston rod comprising a stem, or body, a strap having screw threaded wings en'ibracing an end thereof, and a screw threaded sleeve disposed about said stem and engaged with the screw threads on said strap.

(S. A piston rod comprising a stem, or body, a strap having wings embracing an end thereof, and tapering shims between the wings of said strap and the body of the rod.

7, A piston rod comprising a stem, or body, a strap having wings embracing an end thereof, and a pair of oppositely disposed tapering shims disposed between each of the wings of the strap and the body of the rod.

8. A piston rod comprising a stem, or body, a strap having wings embracing an end thereof, means disposed about said stem and engaged with said strap to draw the same up against the rod, and tapering shims disposed between the wings of said straps and the body of the rod.

9. A piston rod comprising a stem, or body, 'a strap having wings en'ibracing an end thereof, means disposed about said stem and engaged with said strap to draw the same up against the rod, and oppositely disposed tapering shims disposed between each of the wings of said strap and the body of the rrd.

J AMES It. FRENCI l. 

